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  <title>Document</title>
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  <script>

    var findSmallestInteger = function (nums, value) {
      const count = new Array(value).fill(0);
      nums.forEach(val => count[(val % value + value) % value]++);
      let now = 0;
      while (1) {
        let t = now % value;
        if (count[t] > 0) count[t]--;
        else return now;
        now++;
      }
    };
    console.log(findSmallestInteger(nums = [1, -10, 7, 13, 6, 8], value = 5));
  </script>
</body>

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